BioMedical Admissions Test (BMAT) Practice Test 2026 - Free BMAT Practice Questions and Study Guide

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Which component is commonly used to limit current in a circuit?

Battery

Bulb

Resistor

The component that is commonly used to limit current in a circuit is a resistor. Resistors are designed to provide resistance to the flow of electric current, and according to Ohm's Law (V = IR), when a resistor is placed in a circuit, it limits the amount of current that can flow for a given voltage. This ensures that the circuit operates safely and prevents components from being damaged due to excessive current.

Resistors can be strategically placed in circuits to control current levels, making them essential in various applications, such as protecting sensitive components, voltage division, and controlling signals. Unlike batteries, which provide a source of voltage, or capacitors, which store energy temporarily, resistors play a critical role in managing and regulating the flow of electricity, ensuring that circuits function properly and efficiently.

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Capacitor

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